BROOKLYN - A pilot program aimed at keeping the borough green has taken off with such a bang that it is now expanding.

The Department of Sanitation started a composting collection project last year in Windsor Terrace, Greenwood and Park Slope. Now, the program is expanding to other parts of the borough, so be on the lookout for a brown bin.

Residents living in one of the designated areas are asked to put organic waste such as food scraps, vegetables and other biodegradable items into the brown bins. The program helps cut waste and save the city money on landfill costs.

The organic recycling effort will be heading to more parts of Park Slope, Gowanus, Greenwood Heights, Sunset Park and Bay Ridge.